INFO: task syz.3.19:6690 blocked for more than 143 seconds.
      Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19        state:D stack:27488 pid:6690  tgid:6683  ppid:6431   task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 d_wait_lookup fs/dcache.c:2494 [inline]
 d_alloc_parallel+0xc3c/0x1630 fs/dcache.c:2576
 __lookup_slow+0x117/0x400 fs/namei.c:1778
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b3cd85d19
RSP: 002b:00007f4b3db42038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4b3cf76080 RCX: 00007f4b3cd85d19
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007f4b3ce01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4b3cf76080 R15: 00007ffc4c9f9548
 </TASK>
INFO: task syz.1.17:6738 blocked for more than 145 seconds.
      Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.17        state:D stack:27488 pid:6738  tgid:6734  ppid:6420   task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 d_wait_lookup fs/dcache.c:2494 [inline]
 d_alloc_parallel+0xc3c/0x1630 fs/dcache.c:2576
 __lookup_slow+0x117/0x400 fs/namei.c:1778
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6d72185d19
RSP: 002b:00007f6d73005038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6d72376080 RCX: 00007f6d72185d19
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007f6d72201a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f6d72376080 R15: 00007ffe9bd91878
 </TASK>
INFO: task syz.0.16:6750 blocked for more than 146 seconds.
      Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.16        state:D stack:27488 pid:6750  tgid:6746  ppid:6418   task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 d_wait_lookup fs/dcache.c:2494 [inline]
 d_alloc_parallel+0xc3c/0x1630 fs/dcache.c:2576
 __lookup_slow+0x117/0x400 fs/namei.c:1778
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f94f9b85d19
RSP: 002b:00007f94faa39038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f94f9d76080 RCX: 00007f94f9b85d19
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007f94f9c01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f94f9d76080 R15: 00007ffc90fcbaa8
 </TASK>
INFO: task syz.2.18:6754 blocked for more than 148 seconds.
      Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.18        state:D stack:27488 pid:6754  tgid:6751  ppid:6423   task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 d_wait_lookup fs/dcache.c:2494 [inline]
 d_alloc_parallel+0xc3c/0x1630 fs/dcache.c:2576
 __lookup_slow+0x117/0x400 fs/namei.c:1778
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d4ed85d19
RSP: 002b:00007f2d4fb9d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2d4ef76080 RCX: 00007f2d4ed85d19
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007f2d4ee01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2d4ef76080 R15: 00007ffcb14efd28
 </TASK>
INFO: task syz.4.20:6763 blocked for more than 150 seconds.
      Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.20        state:D stack:27488 pid:6763  tgid:6759  ppid:6435   task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 d_wait_lookup fs/dcache.c:2494 [inline]
 d_alloc_parallel+0xc3c/0x1630 fs/dcache.c:2576
 __lookup_slow+0x117/0x400 fs/namei.c:1778
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb464985d19
RSP: 002b:00007fb465828038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb464b76080 RCX: 00007fb464985d19
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007fb464a01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb464b76080 R15: 00007ffcc2f3bde8
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/u8:0/11:
1 lock held by khungtaskd/30:
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
1 lock held by kswapd0/89:
5 locks held by kworker/u8:5/1317:
 #0: ffff88801baf3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
 #0: ffff88801baf3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
 #1: ffffc90004ebfc60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
 #1: ffffc90004ebfc60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
 #2: ffffffff8fca1990 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 net/core/net_namespace.c:606
 #3: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:12323
 #4: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
 #4: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:996
3 locks held by kworker/u8:6/1894:
 #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
 #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317